Emission temperatures from the decay of particle unstable complex nuclei

Generalized isoscaling of isotopic distributions

“…Calculations of the yields of secondary fragments after sequential decay require an accurate accounting for feeding from the particle decay of highly excited heavier nuclei [25,32,33]. Such calculations are doable but are somewhat nontransparent and subject to uncertainties regarding the levels that can be excited and the structure effects that govern their decay [25,26,32,33].…”

Nuclear isotope thermometry

“…This issue clearly needs further study to see whether the role of particle unstable nuclei can be constrained, for example, by direct measurements using techniques discussed in refs. [23,28] or by other experimental observables.…”

“…The other final distribution (dashed line) is obtained by calculating the secondary decay for Z ≤ 10 hot fragments, as in ref. [22,23], according to empirical nuclear structure information regarding the excitation energies, spins, isospins and decay branching ratios where available. For hot fragments with Z ≤ 10 where such information is not available, the decay is calculated according to the Hauser-Feshbach formalism [24].…”

Emission temperatures from widely separated states in−14andinducedSchwarz1, Gong2, Carlin3 et al. 1993Phys. Rev. CSelf Cite293390View full textAdd to dashboardCite

“…Many explanations for these discrepancies have been offered [13,16,18,44,46,49]. Temperatures extracted from energy spectra for noncompound emission mechanism are likely to be misleading, however, because of their sensitivity to Coulomb barrier Ructuations [50], sequential feeding from higher-lying states, and dynamical e8'ects such as collective motion [49,51 -58] and nonequilibrium emission [59,60].…”

“…Temperatures extracted from energy spectra for noncompound emission mechanism are likely to be misleading, however, because of their sensitivity to Coulomb barrier Ructuations [50], sequential feeding from higher-lying states, and dynamical e8'ects such as collective motion [49,51 -58] and nonequilibrium emission [59,60]. Sequential decay [5,18,61] and nonequilibrium phenomena can also inHuence the excited state population [17 -19,45,46]. One must therefore extend the limited database upon which our present understanding is based.…”